Rossioglossum hagsaterianum is an epiphytic orchid from the genus Rossioglossum.
Plants bloom in the fall with four to eight 9 to16 cm wide flowers. Sepals and petals are glossy chocolate brown, with some yello rim, and the lip is flaring abruptly from a narrow base, with red-brown markings at the edge. The species Rossioglossum splendens is very similar, but has a lip with a gradually tapering base and somewhat smaller flowers.
Plants are found in the oak and pine forest of Nayarit state of Mexico at elevations of 1300 to 2000 meters
Grow plants in cool to intermediate temperatures in partial shade to bright light. Water plant when mix drys. During the winter give plants a slight dryout between waterings. Water approximately once a week. Pot with medium fir bark.